Home / 21,977.08-33,138.04-20,140

Finding the Fourth Proportional to 21,977.08, 33,138.04 and 20,140

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Solution

The fourth proportional to 21,977.08, 33,138.04 and 20,140 is: 30,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.08 : 33,138.04 = 20,140 : x
  2. Step 2: Convert to fraction form
    21,977.08/33,138.04 = 20,140/x
  3. Step 3: Cross multiply
    21,977.08x = 33,138.04 × 20,140
  4. Step 4: Simplify right side
    21,977.08x = 667,400,125.60
  5. Step 5: Solve for x
    x = 667,400,125.60/21,977.08
  6. Step 6: Final answer
    x = 30,368.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.